Door-knob



(No Model.) W. E. GREENE.

DOOR KNOB.

No. 434,543. Patented Aug. 19, 1890.

WILLIAM F. GREENE,

DOOR- PATENT OFFICE.

OF TROY, NEW YORK.

KNOB.

SPECIFICATION forming part of Letters Patent No. 434,543, dated August 19, 1890.

Application filed May 14, 1890.

To all whom it may concern:

Be it known that I, WVILLIAM F. GREENE, a citizen of the United States, residing at Troy, in the county of Rensselaer and State of New York, have invented certain new and useful Improvements in Door-Knobs; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has relation to knobs; and it consists in the construction and novel arrangement of parts, as hereinafter more fully described, illustrated in the accompanying drawings, and pointed out in the appended claims.

The object of my invention is to provide a neat, simple, and inexpensive knob for use on doors and drawers of any description.

A further object is to construct the handhold of non-conducting material, whereby the knob is especially adapted for use on doors and dampers of stoves. It is also my intention V to make the hand-hold of different colorsas, for instance, green, blue, dark red, and amber colors, or any other color that is pleasing to the eye, and to nickel-plate the bracket, which may be made of composition or malleable iron.

In the drawings, Figure 1 is a plan View of the bracket; Fig. 2, a detail view of the handhold; Fig. 3, a plan View of the knob complete, partly in section.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in all the figures, the letter A designates the bracket, which is made of malleable iron or composition, and consists of the stem B, having made integral therewith the forwardly-projecting arms Z), which, when the bracket is cast, are given somewhat of a spread, as shown in Fig. 1, and are provided at their outer ends and opposite faces w;th the cone-shaped lugs or projections 12', for a purpose presently explained.

The letter 0 indicates a screw-threaded shank formed on the stem B, adapted :0 receive a not a, by means of which the knob is secured in place, and at the junction of said shank with the stem B a shoulder c is formed, adapted to bear against the door or drawer front.

It has been found in practice that in knobs of this description the nut has a tendency to work oif the screw-threaded shank, thereby allowing the knob to drop off the door or drawer. To overcome this difliculty,I form in the screw-threaded shank a groove f, adapted to receive a pin f, which is wedged in said groove and the threads of the nut, thereby preventing the nut from turning on the shank.

The letter D designates the hand-hold, constructed of a non-conducting materialas, for instance, glassand of any preferred shape, and is provided upon opposite ends with recesses d, designed to receive the projections or lugs Z).

In order that the hand-hold may be prevented from turning in the arms of the bracket, I form on said hand-hold a projection (Z designed to enter a recess d, formed in the stem B.

To secure the hand-hold between the arms of the bracket, the projection (Z is held in the recess (1 and the recesses d in line with the projections 11 on the arms I). The bracket is then placed between the jaws of a vise and the arms I) forced together, as shown in Fig. 3.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. In a knob, the combination, with the stem provided with a screw-threaded shank and the forwardly-extending arms provided with projections, of a non-conducting handhold having recesses adapted to engage said projections and a proj eet-ion on the. hand-hold designed to enter a recess formed in the stem, whereby said hand-hold is prevented from turning,'substantially as described.

2. In a knob, the combination, with the stem having a screw-threaded shank and a groove formed therein adapted to receive a pin, the .forwardly-extending arms having projections, of a non-conducting hand-hold provided with a projection adapted to enter a recess formed in the stem, and the recesses in said hand-hold designed to engage the projections on the arms I) when the latter are forced together, substantially as described.

In testimony whereof I affix mysignature in presence of two witnesses.

WILLIAM F. GREENE. Witnesses:

JNo. H. KNOX, WALTER F. MEAD. 

